"All progress is made by a lazy person looking for an easier way"
Robert
Heinlein is best known for his science fiction works such as “Starship
Troopers” or “The Moon is a Harsh Mistress”. They are all good but one that has
stuck with me through the years is the long short story called “The man who was
too lazy to fail”. Basic story line: Boy is growing up in West Virginia, sees
his father working in the fields. He figures he is too lazy to do that so goes
to school. When his friends graduate and go to work in the mines, he is too
lazy and goes to the Naval Academy. He finds the easiest job in the Navy is
flying so becomes a Naval Aviator. Flying is hard work so he invents an
automatic pilot. And so on. It is an interesting story in itself but what made
it stick with me was the concept of what I would call creative laziness.
When
I present my Achieving Lean Changeover workshops in client plants, many of the
attendees come with impression that I am there to make them work harder and
faster. In my experience, trying to get people to work harder and/or faster
than the natural pace is like trying to teach a pig to sing. It frustrates the
teacher and annoys the pig. What I want them to do is work less while doing it
more slowly and carefully while reducing the time it takes for changeover. The
only way to accomplish this seemingly contradictory goal is to eliminate work
that is unnecessary.
I
tell Heinlein story in my workshops and even have a slide that says “Be Lazy!”.
It is not that I want people to be lazy in the sense we normally think of the
word. I want people to be lazy in creative ways. I want them to find easier
ways to do their jobs. To repeat, I want them to eliminate work that is
unnecessary.
The
initial reaction of most people is that everything they do is necessary. In
some cases that may be true but in many cases, it is not.
CASE:
I was presenting the workshop and we were focusing on changeover of a cartoner.
The process called for a series of adjustments on each side of the machine. The
way they did this was to adjust the first point on the front of the machine,
walk around the end of the line and make the corresponding adjustment on the
back. They would then make the next adjustment on the back and walk around to
make the corresponding adjustment on the front. One of the operators noted that
more than 5 minutes (by stopwatch) was being spent walking during the
changeover. The first thought was to have two people working on this, one on
the front, one on the back. This looked like it might take more time, getting
the two people to the machine at the same time, than it would save. One of the
operators asked if all the front adjustment could be made together prior to
making the back adjustment. There seemed no reason why not, it was tried and on
proving successful, implemented. This saved the mechanic 5 minutes or about 1/3
of a mile of walking per changeover. Walking is not productive work.
CASE:
At the end of the batch, operators needed to remove bottles of tablets from the
line for reconciliation. There were usually several hundred bottles. They
removed the bottles 4-5 at a time and carried them to a nearby table. The table
was modified by adding locking castors. Now, instead of bringing the bottles to
the table, the table is brought to the bottles.
CASE:
In a bottling plant, plastic bottles were laser coded on the shoulder. For each
bottle height, the laser needed to be repositioned. The code was moved to the
heel of the bottle. Regardless of bottle height/diameter, the centerline of the
bottle at the heel is always in the exact same place. The cap is used to
trigger the laser and no adjustment is ever necessary. The entire laser
changeover was eliminated.
There
are many other examples in all industries and all processes. I would be willing
to bet cash money there are examples right in your plant.
These
tasks continue to be done year in and year out for a variety of reasons.
Perhaps the most common is simple inertia. That is the way it has always been
done so that is the way it always will be done. Closely related to inertia is
failure to look at each task to determine whether it is really necessary and
take action to eliminate it when it is not. It takes an effort to break out of
this zone but the effort will be worth it. Changeovers will be easier and
better for eliminating all wasted work. This is really all Lean Manufacturing
is. It might be better to call it Lazy Manufacturing.
In
my workshops I pass out yellow lapel buttons made up that say “Be Lazy”. I will
be happy to send one to anyone who requests it. Just drop me a note at
johnhenry@changeover.com